I like it, but i’m still not convinced enough to buy one due to the price

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Thijsco19 wrote:

a regular symptom of flasholism

“Flasholism is the most severe form of flashlight use and involves the inability to manage your flashlight use habits. It is also commonly referred to as flashlight use disorder. Flashlight use disorder is organized into three categories: mild, moderate and severe. Each category has various symptoms and can cause harmful side effects. If left untreated, any type of flashlight use can spiral out of control.”

Is it me or titanium just doesn’t make sense in this configuration? Physically and performance wise!
Apart from arguable fancy appearance of colour choices (I don’t think any of this colours matches copper. Maybe with forced patina? CRX will understand me, probably )
Intead of titanium I would love to see aluminium tube, tailcap and bezel with copper “engine” for a bit more price over standard D4 or for 80-90$ offering full copper. That would be step forward.
Titanium is heavier than aluminium, it has poor thermal conductivity compared to copper and ridiculously high electrical resistance compared to copper, aluminium and their alloys which leads to lower amps which might be desirable considering thermal downgrade of body but who wants to compensate all this for a double price of standard model is boggling my mind.
Maybe I am just too harsh or plain stupid?

I personally want one, I want the natural titanium one. But the cost is out of my range.
I don’t mind losing a couple hundred lumens to have the titanium. But the increase in cost is just to substantial…
I can buy an armytek or other larger name brand that is built to swim with and handle the recoil on a .12 gauge for this price.

The copper and titanium version isn’t for performance … it’s for BLING!

For flashlight use, aluminum is by far the best material. The aluminum version of the D4 is half the weight of the copper-titanium version. And think about how the copper head on the new D4 will work? … it will get burning hot within seconds, including the critical area right around the button. It will probably be necessary to set the temp stepdown to a lower temp in this version than with the aluminum version.

So why do people like copper and titanium so much? one word: BLING. It looks cool and a bit unique even though it’s much less practical.

The titanium is not the best conductor of heat so on a hot build with that driver the guts can get very hot very quickly

Aluminum is way worse than Copper, the “numbers” suggest.
Yet, DTP Aluminum vs DTP Copper barely any difference in real life tests

I would like to see a test with a D4 vs D4Ti in 18350 and the same LED type, with both flashlights configured thermally at the same level before the test (as there seems to be great significance in how the MCUs read the temperature by default), that shows the D4Ti is significantly worse than aluminum, to the same magnitude of difference as the “numbers” suggest.

The copper and titanium version isn’t for performance … it’s for BLING!

For flashlight use, aluminum is by far the best material. The aluminum version of the D4 is half the weight of the copper-titanium version. And think about how the copper head on the new D4 will work? … it will get burning hot within seconds, including the critical area right around the button. It will probably be necessary to set the temp stepdown to a lower temp in this version than with the aluminum version.

So why do people like copper and titanium so much? one word: BLING. It looks cool and a bit unique even though it’s much less practical.

Absolutely agreed.

If there were no black aluminum version many of us would be asking for one.

Some of us are trying to apply logic and reason, to a light that is purely an emotional buy.

there is no practical reason for a light that can get so hot it burns your hand, but people flock to buy multiple D4 lights

there is no practical reason for a light that is capable of thousands of lumens, but cannot maintain more than 500 for any amount of time, but people flock to buy multiple D4 lights

there is no practical reason for a light with a ramping interface that has no discrete, repeatable, lumen levels.. but.. D4 buyers flock like lemmings to the sea

there is no practical reason for a light that can drain an 18650 in 10 minutes, but that has not stopped the D4 from being purchased in higher numbers than any other light on BLF

the benefit of a Titanium body is that it insulates the hand from excess heat, except that using the switch to turn it off will lead to some heat shock from touching the copper head

then there is the PWM above 150 lumens, but who cares, regulation is overrated

Buy the D4 not because it makes sense, buy it because everybody knows it is the Hot Ticket

Stated perfectly. I bought these for that pretty little hot rod they are. Copper head improved performance, but really how much being so small. These lights I got for it’s Lego ability, bling and being the latest in geek art. Now if they sold as a la carte I’d be even poorer.

…Copper head improved performance, but really how much being so small.

I predict the copper head will have WORSE thermal performance than aluminum.

Copper conducts heat better and the copper head will get burning hot considerably faster. Copper can also store more heat so it will get and stay hotter than anodized aluminum.

Shiny copper and titanium has lower emissivity than anodized aluminum so isn’t as good at radiating the heat to atmosphere.

The titanium around the head also won’t help. Titanium is a poor conductor of heat and won’t do a good job at wicking heat away from the head. This is unlike the aluminum version whose body tubes are quite thick and do a good job absorbing some of the heat. In the titanium D4, even more heat will stay concentrated in the head, rather than being distributed throughout the light.

End result will most likely be the user will have to keep the temperature sensor set to a lower temperature in the titanium version than in the aluminum version to avoid unwanted burns when trying to activate the button.

One of our fav lights of 2017 the D4 now has a ti flavour available…………..whats not to like. The D4 is a crazy fun light, great UI with pretty much some of the better LED and colour temp options to suit most. I have noticed over the years, fav lights(well so to speak) people tend to want a ti version, be it the more expensive BOSS or limited RA HDS ti. Now a D4ti imo is pretty awesome, who cares if you get 8s of 3500lm instead of 15s(example) of……………..its ti. Can be polished, other advantages like being very resistant to chemicals along with looking cool! Also i hate lots of chips and dings in ano, lights can soon look scruffy, ti/stainless holds up better and i prefer these options for certain flashlight applications.

I can not think of a quad(or triple, think $700+ on the stunning ti BOSS here) for around $100 give/take………….in the scheme its a bargain. I like the raw and will be adding it to my D4 family at some point. Not over keen on the coloured ones………..subjective.

The titanium is not the best conductor of heat so on a hot build with that driver the guts can get very hot very quickly

Aluminum is way worse than Copper, the “numbers” suggest.
Yet, DTP Aluminum vs DTP Copper barely any difference in real life tests

I would like to see a test with a D4 vs D4Ti in 18350 and the same LED type, with both flashlights configured thermally at the same level before the test (as there seems to be great significance in how the MCUs read the temperature by default), that shows the D4Ti is significantly worse than aluminum, to the same magnitude of difference as the “numbers” suggest.

I’d rather want to see a test rather than predictions, like the statement the driver will die, which is an invalid statement considering there is a thermal function implemented in the first place.

I am in the market for a new edc and that ti raw finish looks so nice.
But will it be brighter than my convoy s2+ 2800 mah when run for more than a few minutes straight? Or will it dim down and not give me the output I would like